Plug connecter with interchangeable fuses



Dec. 8, 1936. y S. BRODY 2,063,723

PLUG CONNECTEBV'WITH INTERGHANGEABLE FUSES Filed Nv'] 1955 2 Sheets-Sheet l n 'fla l L v INVENTOR Solomon ATTORNEY Dec. 8, 1936. s, BRQDY 2,063,723

l PLUG CONNECTER WITH INTERCHANGEBLE FUSES Filed Nov. '7, 1955 y2 Sheets-Sheet 2 @lf/A 14 45 l0 mmf un? l 'i lNvEN-roR y' Solomon BTOCJ/ f3 /T 5.90-

A TTORNEY Patented Dec. 8, 1936 UNITED STATES PATENT OFFICE PLUG CONNECTER WITH INTERCHANGE- ABLE FUSES of Brooklyn, N. Y.

Application November 7, 1935, Serial No. 48,712

6 Claims.

This invention relates to new and useful improvements in a plug connecter with interchangeable fuses, used for electrical devices.

The invention has for an object the construction of a device as mentioned which ischaracterized by a body having a removably mounted cap, and fuse elements removably mounted in said body.

More particularly it is contemplated to arrange the body with passages for receiving the fuses, and to associate spaced terminals with the fuses by which the electrical device may be engaged in a conventional electric socket.

Another object of the invention is a novel arrangement for detachably connecting said cap upon said body.

A further object of the invention is the provision of a simple means by which the fuses may be partially ejected from the body when desired.

Still further the invention contemplates the construction of a device as mentioned of relatively at shape.

Another object of the invention is the construction of a device as described which is simple and durable and which may be manufactured and sold at a reasonable cost.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended invention are more particularly set forth.

In the accompanying drawings forming a material part of this discloslure;-

Fig. 1 is a side elevational view of 'a device constructed according to this invention.

Fig. 2 is a plan view of Fig. 1. Fig. 3 is a view similar to Fig. l but shown with a portion thereof broken away to disclose interior parts. n

Fig. 4 is a top plan view of the device with the cap removed. y

Fig. 5 is a vertical sectional view taken on the line 5 5 of Fig. 4.

Fig. 6 is a bottom view of the cap of the device. Fig. 7 is an enlarged vertical sectional view illustrating a modiiled form of the device.

Fig. 8 is a similar view to Fig. 3, but showing another form of the invention. y

Fig. 9 is a horizontal sectional view taken on the line 99 of Fig. '8.

Fig. l0 is a fragmentary vertical sectional view taken on the line III-KIII of Fig. 9.

Fig. 1l is a similar viewA to Fig. 8, but showing a still further modification of the invention in claims in which the various novel features of the (Cl. 20G-115.5)

which a portion thereof is broken away to reveal the post structure.

Fig. 12 is a horizontal sectional view taken on the line I2-I2 of Fig. 11.

Fig. 13 is a side elevational view of a device constructed according to another embodiment of this invention.

Fig. 14 is a plan view of Fig. 13.

Fig. 15 is a bottom view of the cap shown in Fig. 13.

Fig. 16 is a vertical sectional view taken on the line II-IS of Fig. 14.

Fig. 17 is a sectional view taken on the line II-IT of Fig. 16.

Fig. 18 is a fragmentary vertical sectional view showing a still further modified form of the invention.

Fig. 19 is a similar view to Fig. 8, but showing a still further modified form of the invention.

Fig. 20 is a. bottom perspective view of the plug cap illustrated in Fig. 19.

The plug-connecter fuse according to this invention comprises a body Ill having a removably mounted cap II held in position by a bolt I2. The body I0 has a reduced top portion Ill'al which is adaptedvto engage in a similarly shaped recess in the cap I I. A pair of spaced terminals I3 are mounted on the body I0 and are adapted to engage in a conventional electric light socket.

'I'he body I 0 is formed with passages I4 in which fuses I5 may normally be housed. These fuses rest upon outt'urned end portions I3l of the terminals I3. These end portions I3 may have indented portions I3d into which the lower ends of the fuses engage. 'Ihe upper ends of the fuses engage against terminal clips I6 mounted or imbedded in cap I I. Terminal screws I1 are threaded in terminal clips I6. Electric wires I8 are connected with the terminals I 1 and pass through an opening I9 in the top of cap.

'A means may be provided for ejecting the fuses as illustrated in Fig. 'l and consists of an annular member 2I which is rotatively mounted in the body I0 at the bottom thereof. The terminals I3 pass through the center of the annular member. A pair of pins 22 are slidably mounted in passages 23 in the body and rest uponthe top of the annular member. Each pin has a spring 24 coaxially mounted thereon and acting between the terminal and the lower end of the pin which is formed with a head for this purpose. The annular member 2| has several projecting cam portions 25 which are adapted,

` when the annular member is turned, to ride beneath the pins 22 and force them upwards. The

pins pass through apertures |3b in outturned end portions I3a of terminals I3 and are aligned with the lower ends of the fuses and when the annular member 2| is turned, the fuses will be lifted. Several small pegs 26 project from the annular member 2| by which it may be readily turned.

If this device is engaged in the circuit of an electrical device and any one of the fuses blow out it may be replaced by first removing the bolt I2 and then the annular member 2| is turned, so that the cam portions 25 lift the pins 22 which in turn lift the fuses I5. The fuses are now suiliciently ejected so that they may be manually removed.

In Figs. 8, 9 and l0, the cap II is threadedly engaged on the body I and a bridging contact plate 36 of insulation material, is removably secured to the body I0 by a screw 31. The bridging contact plate 36 is held from rotation by raised posts IUD.

This bridging contact plate 36 is formed with metallic extensions 36', preferably of brass or copper which are adapted to engage over the fuses I5 in contacting position. Terminal screws 39 are threaded into the extremities of the metallic extensions 3B. The electric wires IB are connected with these terminals and pass through an opening I9 in the top of cap II.

In other respects the form of this invention is the same as in the previous forms.

In Figs. 11 and 12, a still further modifica- `tion has been illustrated. In this form of the invention, the contact plate 36 is not screwed to the base ID but it is forced into engaging position with fuses I5 by vertical projections IIb of cap II". The contact plate 36 has projections 36b adapted to engage the lower extremities of the vertical projections IIb mounted on the cap II" for holding the contact plate 36 against any vertical movement. The bridging contact plate is prevented from turning by raised posts IIIc of the body I0 (see Fig. 11).

In other respects this invention is similar to that shown in Fig. 8 and the various parts may be recognized by the corresponding reference numerals.

In the form of the invention shown in Figs. 13 to 17 inclusive, the plug-connecter fuse is of relatively flat shape. It is composed of the body section having a removably mounted cap 3|. A screw 32 engages through the cap and serves to removably hold the cap on the body. The cap and body are formed with interengaged parts for holding them in proper alignment.

The body 30 has several passages 3D for the fuses 32. These fuses rest upon terminals 33 which project from the bottom of the body. The upper ends of the iuses are engaged by terminals 34 which are mounted on the cap 3i. The cap is formed with a passage 35 for an electric cord to connect with the terminals.

In use this device is very similar to the preferred form but distinguishes in the fact that the fuses will project from the top of the body when the cap is removed. Therefore they may be readily grasped and removed when necessary.

In Fig. 18, resilient clips I3C are attached above the horizontal portions I3 of terminals I3. The fuses I5 rest upon these resilient clips in passages I4.

In the device illustrated in Figs. 19 and 20, the plug-connecter fuse is substantially cylindrical. shape. It is composed of the body section and cap section 4I, threadedly engaged at 42. Contact plates 43 are supported by cap 4I. These contact plates are provided with binding posts 44 for the connection of electric Wires I8. The free ends 43 of Contact plates 43 are adapted to engage fuses I5. In other respects, this form of the invention is similar to the previous forms except in the support of the contact plates 43 which are removable with the threaded cap 4I.

It is to be understood that the various parts may be of any suitable material and proportion. The fuses may be of the standard type but may also be of a special construction.

While I have illustrated and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as dened in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure'by United States Letters Patent is:-

1. A plug-connecter with interchangeable fuses, for electrical devices, comprising a body having a removably mounted cap, spaced terminals mounted on said body and extending from the bottom end thereof, said body having passages for fuses, fuses within said passages and resting against said terminals, a bridging element for holding said fuses within said passages.

2. A plug-connecter with interchangeable fuses. for electrical devices, comprising a body having a removably mounted cap, spaced terminals mounted on said body and extending from the bottom end thereof, said body having passages for fuses, fuses within said passages and resting against said terminals, a bridging element ior holding said fuses within said p'ssages, fastening elements and raised posts fcreleasably holding said bridging element from moving within said body.

3. A plug-connecter with interchangeable fuses, for electrical devices, comprising a body having a removably mounted cap threadedly engaged on the body, spaced terminals mounted on said body and extending from the bottom end thereof, said body having 'passages for fuses, fuses Within said passages and resting against said terminals, a bridging member within said cap, means for keeping said bridging member rmly in position over the top ends of the fuses,lmetallic extremities protruding from the bridging member, said extremities being in contact with the top ends of the fuses and a binding post on each of the said metallic extremity of the bridging member.

4. A plug-connecter with interchangeable fuses, for electrical devices, comprising a body having a removably mounted cap threadely engaged on thc body, spaced terminals Amounted on said body and extending from the bottom end thereof, said body having passages for fuses, fuses within said passages and resting against said terminals, a bridging member within said cap, means for keeping said bridging member firmly in position over the top ends of the fuses, metallic extremities protruding from the bridging member, said extremities being .in contact with the top ends of the iuses and a binding post on each oi' thc said metallic extremity of the bridging member, said means comprising a plurality of projections within said cap pressing against the upper surface of the bridging member when the cap is securely held on the said body.

5. A plug-connecter with interchangeable fuses, for electrical devices, comprising a, body having a removably mounted cap threadedly engaged on the body, spaced terminals mounted on said body and extending from the bottom end thereof, said body having passages for fuses, fuses within said passages and resting against said terminals, a bridging member within said cap, means for keeping said bridging member rmly in position over the top ends of the fuses, metallic extremities protruding from the bridging member, said extremities being in contact with the top ends of the fuses and a binding post on each of the said metallic extremity of the bridging member.

6. A plug-connecter with interchangeable fuses,

for electrical devices, comprising a body having a removably mounted cap threadedly engaged on the body, spaced terminals mounted on said body and extending from the bottom end thereof, said body having passages for fuses, fuses j within said passages and resting against said terminals, a bridging member within said cap, means for keeping said bridging member rmly `in position over the top ends of the fuses, me- 

